Touch substrate, display panel and electronic equipment

Abstract

A touch substrate, display panel, and electronic device. The touch substrate includes a base substrate and first and second touch electrodes located on the base substrate. The first touch electrodes are arranged along a first direction and extend along a second direction, while the second touch electrodes are arranged along the second direction and extend along the first direction. The second touch electrodes include second touch sub-electrodes and second connecting electrodes. The second touch sub-electrodes are arranged along the first direction and the second connecting electrode is located between two adjacent second touch sub-electrodes. The second touch sub-electrodes and the second connecting electrode are located on different conductive layers. The second connecting electrode includes a connecting sub-electrode, with both ends of the connecting sub-electrode respectively connected to two adjacent second touch sub-electrodes. The connecting sub-electrode includes a first fold line portion and a second fold line portion having a substantially V-shaped fold line shape, with the fold line-shaped openings of the first and second fold line portions being arranged opposite each other along the second direction. The touch substrate is advantageous in reducing electrode visualization.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to a touch substrate, a display panel, and an electronic device. Background Art

[0002] User interfaces with touch functionality are widely used in various electronic devices, such as display panels or display devices. The touch structure used to implement the touch functionality includes a touch electrode structure, and the configuration of the touch electrode structure is an important factor affecting the user experience. Summary of the Invention

[0003] At least one embodiment of the present disclosure provides a touch substrate, which includes a base substrate and a plurality of first touch electrodes and a plurality of second touch electrodes located on the base substrate; the plurality of first touch electrodes are arranged along a first direction, and each of the first touch electrodes extends along a second direction different from the first direction, the plurality of second touch electrodes are arranged along the second direction, and each of the second touch electrodes extends along the first direction; each of the first touch electrodes includes a plurality of first touch sub-electrodes and at least one first connecting electrode, the plurality of first touch sub-electrodes are arranged along the second direction, and each of the first connecting electrodes is located between two adjacent first touch sub-electrodes in the second direction, so that the two adjacent first touch sub-electrodes are electrically connected; each of the second touch electrodes includes a plurality of second touch sub-electrodes and at least one second connecting electrode, the plurality of second touch sub-electrodes are arranged along the first direction , each second connecting electrode is located between two second touch sub-electrodes adjacent to each other in the first direction, so that the two adjacent second touch sub-electrodes are electrically connected; the second touch sub-electrode and the second connecting electrode are respectively located in different conductive layers relative to the base substrate; the second connecting electrode includes at least one connecting sub-electrode, and the two ends of each connecting sub-electrode are respectively connected to the two adjacent second touch sub-electrodes, and the positive projection of each connecting sub-electrode on the base substrate overlaps with the positive projection of one of the first touch sub-electrodes on the base substrate; each connecting sub-electrode includes at least one first fold line portion and at least one second fold line portion, the fold line shape of the first fold line portion is approximately V-shaped, and the fold line shape of the second fold line portion is approximately V-shaped, and the fold line opening of the first fold line portion and the fold line opening of the second fold line portion are arranged opposite to each other along the second direction.

[0004] For example, in a touch substrate provided in an embodiment of the present disclosure, the first fold line portion and the second fold line portion are arranged along the second direction, and the vertices of the fold line shape of the first fold line portion and the vertices of the fold line shape of the second fold line portion are approximately located on a first straight line extending along the second direction.

[0005] For example, in a touch substrate provided in an embodiment of the present disclosure, the fold line-shaped opening of the first fold line portion and the fold line-shaped opening of the second fold line portion are substantially axisymmetric with respect to a second straight line extending along the first direction.

[0006] For example, in the touch control substrate provided in one embodiment of the present disclosure, each of the connecting sub-electrodes includes a first contact portion, a second contact portion and a plurality of connecting portions; the first contact portion and the second contact portion respectively serve as the two ends of the connecting sub-electrode and are connected to the two adjacent second touch sub-electrodes, the plurality of connecting portions are located between the first contact portion and the second contact portion and are arranged along the second direction, and the two ends of each of the connecting portions are respectively connected to the first contact portion and the second contact portion; the plurality of connecting portions include a first connecting portion and a second connecting portion, the first connecting portion includes the first fold line portion, and the second connecting portion includes the second fold line portion.

[0007] For example, in the touch control substrate provided in one embodiment of the present disclosure, each of the connecting sub-electrodes includes a plurality of first fold line portions and a plurality of second fold line portions, the plurality of first fold line portions are arranged in sequence along the first direction and connected in sequence to form the first connecting portion, and the plurality of second fold line portions are arranged in sequence along the first direction and connected in sequence to form the second connecting portion.

[0008] For example, in a touch substrate provided in an embodiment of the present disclosure, the vertices of the plurality of first fold line portions are approximately located on a third straight line extending along the first direction, and the vertices of the plurality of second fold line portions are approximately located on a fourth straight line extending along the first direction.

[0009] For example, in the touch substrate provided in an embodiment of the present disclosure, the center of the first contact portion and the center of the second contact portion are substantially located on a fifth straight line extending along the first direction.

[0010] For example, in a touch control substrate provided in an embodiment of the present disclosure, the first contact portion includes a plurality of first sub-contact portions, the plurality of first sub-contact portions are arranged at intervals from each other, the first connection portion and the second connection portion are respectively connected to different first sub-contact portions in the first contact portion, so that the plurality of first sub-contact portions are electrically connected to each other through the first connection portion and the second connection portion; the second contact portion includes a plurality of second sub-contact portions, the plurality of second sub-contact portions are arranged at intervals from each other, the first connection portion and the second connection portion are respectively connected to different second sub-contact portions in the second contact portion, so that the plurality of second sub-contact portions are electrically connected to each other through the first connection portion and the second connection portion.

[0011] For example, in a touch substrate provided in an embodiment of the present disclosure, the first connecting portion and the second connecting portion are approximately axisymmetric with respect to a second straight line extending along the first direction, and the centers of the plurality of first sub-contact portions and the centers of the plurality of second sub-contact portions are approximately located on the second straight line.

[0012] For example, the touch substrate provided by one embodiment of the present disclosure also includes a first conductive layer, an insulating layer, and a second conductive layer located on the base substrate, the insulating layer is located between the first conductive layer and the second conductive layer, and the first conductive layer and the second conductive layer are separated and insulated from each other in a direction perpendicular to the base substrate by the insulating layer; the second touch sub-electrode is located in the first conductive layer, the second connecting electrode is located in the second conductive layer, the first contact portion in the second connecting electrode is connected to the second touch sub-electrode through at least one first via hole that penetrates at least the insulating layer, and the second contact portion in the second connecting electrode is connected to the second touch sub-electrode through at least one second via hole that penetrates at least the insulating layer.

[0013] For example, in the touch substrate provided in one embodiment of the present disclosure, the first contact portion and the second touch sub-electrode at least partially overlap in a direction perpendicular to the base substrate to form the at least one first via; the second contact portion and the second touch sub-electrode at least partially overlap in a direction perpendicular to the base substrate to form the at least one second via.

[0014] For example, in a touch control substrate provided in an embodiment of the present disclosure, the first conductive layer is located on a side of the second conductive layer away from the base substrate.

[0015] For example, in the touch control substrate provided in an embodiment of the present disclosure, the first touch control sub-electrode and the first connecting electrode are located in the first conductive layer.

[0016] For example, in a touch substrate provided in an embodiment of the present disclosure, the first touch electrode and the second touch electrode each include a grid structure formed by a plurality of metal grids.

[0017] For example, in the touch substrate provided in one embodiment of the present disclosure, the area enclosed by the orthographic projection of the connecting sub-electrode of the second connecting electrode on the base substrate at least partially overlaps with the area enclosed by the orthographic projection of the first touch electrode on the base substrate, and the grid structure of the first touch electrode includes at least one metal grid located in the overlapping area.

[0018] For example, in the touch substrate provided in an embodiment of the present disclosure, the at least one metal grid includes one or more closed metal grids.

[0019] For example, in the touch substrate provided in one embodiment of the present disclosure, in a direction perpendicular to the base substrate, the first fold line portion of the connecting sub-electrode and the first touch electrode overlap with each other at at least one first position; in a direction perpendicular to the base substrate, the second fold line portion of the connecting sub-electrode and the first touch electrode overlap with each other at at least one second position.

[0020] For example, in the touch substrate provided in one embodiment of the present disclosure, the first fold line portion includes a first line segment portion and a second line segment portion, and one end of the first line segment portion and one end of the second line segment portion are connected to each other to form an approximately V-shaped fold line shape. In the direction perpendicular to the base substrate, the first fold line portion of the connecting sub-electrode and the first touch electrode overlap with each other at multiple first positions, and the multiple first positions are located in the first line segment portion and / or the second line segment portion; the second fold line portion includes a third line segment portion and a fourth line segment portion, and one end of the third line segment portion and one end of the fourth line segment portion are connected to each other to form an approximately V-shaped fold line shape. In the direction perpendicular to the base substrate, the second fold line portion of the connecting sub-electrode and the first touch electrode overlap with each other at multiple second positions, and the multiple second positions are located in the third line segment portion and / or the fourth line segment portion.

[0021] For example, in the touch control substrate provided in one embodiment of the present disclosure, the second connection electrode includes a plurality of connection sub-electrodes, the plurality of connection sub-electrodes are arranged along the second direction, and the plurality of connection sub-electrodes are respectively connected to the second touch control sub-electrodes at different positions of the second touch control sub-electrode.

[0022] For example, in a touch substrate provided in an embodiment of the present disclosure, the first touch electrode and the second touch electrode are insulated from each other; the first touch electrode is a touch drive electrode, and the second touch electrode is a touch sensing electrode, or the first touch electrode is a touch sensing electrode, and the second touch electrode is a touch drive electrode.

[0023] At least one embodiment of the present disclosure further provides a display panel, which includes a display device and the touch substrate described in any embodiment of the present disclosure, wherein the display device and the touch substrate are stacked.

[0024] For example, the display panel provided in one embodiment of the present disclosure further includes an encapsulation layer, and the encapsulation layer is located between the display device and the touch substrate.

[0025] At least one embodiment of the present disclosure further provides an electronic device, which includes the display panel described in any embodiment of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present disclosure, rather than limiting the present disclosure.

[0027] Figure 1 A schematic diagram of the working principle of a mutual capacitive touch structure;

[0028] Figure 2 A schematic diagram of a partial planar structure of a touch control substrate provided in some embodiments of the present disclosure;

[0029] Figure 3 A schematic diagram of a partial cross-sectional structure of a touch control substrate provided in some embodiments of the present disclosure;

[0030] Figure 4A for Figure 2 An example of a partially enlarged schematic diagram of the region RG1 shown in FIG;

[0031] Figure 4B for Figure 4A Schematic diagram of the connector electrode shown in;

[0032] Figure 5 A schematic diagram of a connecting sub-electrode provided in some embodiments of the present disclosure;

[0033] Figure 6 A schematic diagram of another connecting sub-electrode provided in some embodiments of the present disclosure;

[0034] Figure 7 for Figure 5 A schematic diagram of an overlapping position between the connecting sub-electrode and the first touch electrode in a direction perpendicular to the substrate shown in FIG;

[0035] Figure 8 for Figure 6 A schematic diagram of an overlapping position between the connecting sub-electrode and the first touch electrode in a direction perpendicular to the substrate shown in FIG;

[0036] Figure 9 for Figure 2 A partially enlarged schematic diagram of another example of the region RG1 shown in FIG.

[0037] Figure 10 A schematic diagram of another connecting sub-electrode provided in some embodiments of the present disclosure;

[0038] Figure 11 for Figure 10 A schematic diagram of an overlapping position between the connecting sub-electrode and the first touch electrode in a direction perpendicular to the substrate shown in FIG;

[0039] Figure 12A schematic block diagram of a display panel provided in some embodiments of the present disclosure;

[0040] Figure 13 A schematic structural diagram of a specific example of a display panel provided in some embodiments of the present disclosure; and

[0041] Figure 14 A schematic block diagram of an electronic device provided for some embodiments of the present disclosure. DETAILED DESCRIPTION

[0042] To make the purpose, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0043] Unless otherwise defined, the technical or scientific terms used in this disclosure should have the usual meanings understood by people with ordinary skills in the field to which this disclosure belongs. The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one", "an" or "the" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0044] The drawings in this disclosure are not drawn strictly to scale. The numbers of the first touch electrodes, second touch electrodes, first touch sub-electrodes, second touch sub-electrodes, first connecting electrodes, second connecting electrodes, connecting sub-electrodes, and metal meshes in the touch substrate are not limited to those shown in the drawings. The specific dimensions and numbers of each structure can be determined based on actual needs. The drawings described in this disclosure are merely schematic diagrams of the structures.

[0045] Organic light-emitting diode (OLED) display panels offer broad development prospects due to their self-luminescence, high contrast, low energy consumption, wide viewing angle, fast response speed, compatibility with flexible panels, wide operating temperature range, and simple manufacturing. To meet diverse user needs, integrating multiple functions, such as touch and fingerprint recognition, into display panels is crucial. For example, one approach is to incorporate an on-cell touch structure into an OLED display panel. This approach achieves touch functionality by integrating the touch structure onto the OLED display panel's encapsulation film.

[0046] For example, a mutual capacitance touch structure includes multiple touch electrodes, each of which includes touch drive electrodes Tx and touch sensing electrodes Rx extending in different directions. The touch drive electrodes Tx and the touch sensing electrodes Rx form mutual capacitance for touch sensing at their intersections. The touch drive electrodes Tx are used to input excitation signals (e.g., touch drive signals), and the touch sensing electrodes Rx are used to output touch sensing signals. By inputting excitation signals to, for example, touch drive electrodes extending longitudinally and receiving touch sensing signals from, for example, touch sensing electrodes extending transversely, a detection signal reflecting the capacitance value at the coupling point (e.g., intersection) of the transverse and longitudinal electrodes can be obtained. When a finger touches the touch screen (e.g., cover glass), the coupling between the touch drive electrodes Tx and the touch sensing electrodes Rx near the touch point is affected, thereby changing the mutual capacitance between the two electrodes at the intersection, resulting in a change in the touch sensing signal. Based on the data of the two-dimensional capacitance change of the touch screen based on the touch sensing signal, the coordinates of the touch point can be calculated.

[0047] Figure 1 This is a schematic diagram of the working principle of a mutual capacitance touch structure. Figure 1 As shown, under the drive of the touch drive circuit 11, the touch drive electrode Tx is applied with a touch drive signal, thereby generating electric field lines E, which are received by the touch sensing electrode Rx to form a reference capacitance. When a finger touches the touch screen 12, since the human body is a conductor, a portion of the electric field lines E generated by the touch drive electrode Tx is guided to the finger to form finger capacitance (Finger Capacitance), reducing the electric field lines E received by the touch sensing electrode Rx. As a result, the capacitance between the touch drive electrode Tx and the touch sensing electrode Rx decreases. The touch drive circuit 11 obtains the above-mentioned capacitance value through the touch sensing electrode Rx and compares it with the reference capacitance to obtain the capacitance value change. Based on the capacitance value change data and the position coordinates of each touch capacitor, the coordinates of the touch point can be calculated.

[0048] However, at the intersection of the touch drive electrodes Tx and the touch sensing electrodes Rx, the touch drive electrodes Tx and the touch sensing electrodes Rx typically overlap. Consequently, the number of film layers at the intersection may be relatively greater than at other locations, and the electrodes are also relatively densely arranged. This can easily lead to electrode visualization at the intersection of the touch drive electrodes Tx and the touch sensing electrodes Rx, adversely affecting optical performance. For example, when the aforementioned touch structure is superimposed on an OLED display panel, dark etching lines or moiré patterns, such as dots, lines, or blocks, can easily appear on the display screen, resulting in poor visibility and a serious adverse effect on the display quality.

[0049] At least one embodiment of the present disclosure provides a touch substrate, which includes a base substrate and a plurality of first touch electrodes and a plurality of second touch electrodes located on the base substrate; the plurality of first touch electrodes are arranged along a first direction, and each first touch electrode extends along a second direction different from the first direction; the plurality of second touch electrodes are arranged along the second direction, and each second touch electrode extends along the first direction; each first touch electrode includes a plurality of first touch sub-electrodes and at least one first connecting electrode, the plurality of first touch sub-electrodes are arranged along the second direction, and each first connecting electrode is located between two adjacent first touch sub-electrodes in the second direction, so that the two adjacent first touch sub-electrodes are electrically connected; each second touch electrode includes a plurality of second touch sub-electrodes and at least one second connecting electrode, and the plurality of second touch sub-electrodes are arranged along the first direction Arranged, each second connecting electrode is located between two second touch sub-electrodes adjacent in the first direction, so that the two adjacent second touch sub-electrodes are electrically connected; the second touch sub-electrodes and the second connecting electrode are respectively located in different conductive layers relative to the base substrate; the second connecting electrode includes at least one connecting sub-electrode, and the two ends of each connecting sub-electrode are respectively connected to the two adjacent second touch sub-electrodes, and the positive projection of each connecting sub-electrode on the base substrate overlaps with the positive projection of a first touch sub-electrode on the base substrate; each connecting sub-electrode includes at least one first fold line portion and at least one second fold line portion, the fold line shape of the first fold line portion is approximately V-shaped, and the fold line shape of the second fold line portion is approximately V-shaped, and the fold line opening of the first fold line portion and the fold line opening of the second fold line portion are arranged relative to each other along the second direction.

[0050] In the touch control substrate provided in the above-mentioned embodiments of the present disclosure, by arranging the approximately V-shaped openings of the first fold line portion and the second fold line portion in the connecting sub-electrode relative to each other in the second direction, the first fold line portion and the second fold line portion can be arranged relatively dispersedly between two adjacent second touch control sub-electrodes, thereby making the overlapping area between the connecting sub-electrode and, for example, other film layers or structures in the touch control substrate in a direction perpendicular to the base substrate relatively dispersed, thereby facilitating the reduction or avoidance of the electrode visualization phenomenon and optimizing the optical performance of the touch control substrate.

[0051] For example, when the touch substrate provided in the above embodiments of the present disclosure is applied to a display device such as a display panel or a display apparatus, it can reduce or avoid phenomena such as point-shaped, line-shaped, or block-shaped dark etching lines or moiré patterns that may appear in the display image, thereby reducing or avoiding possible poor visibility in the display image and improving the display effect of the image.

[0052] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. It should be noted that the same reference numerals in different drawings will be used to refer to the same elements described.

[0053] Figure 2 This is a schematic diagram of a partial planar structure of a touch control substrate provided in some embodiments of the present disclosure. Figure 3 This is a schematic diagram of a partial cross-sectional structure of a touch substrate provided in some embodiments of the present disclosure, for example Figure 3 For the Figure 2 AA' line cross-sectional view shown in FIG.

[0054] like Figure 2 and Figure 3 As shown, the touch substrate includes a base substrate 10 and a plurality of first touch electrodes 100 and a plurality of second touch electrodes 200 located on the base substrate 10. The plurality of first touch electrodes 100 are arranged along a first direction R1, and each first touch electrode 100 extends along a second direction R2 different from the first direction R1; the plurality of second touch electrodes 200 are arranged along the second direction R2, and each second touch electrode 200 extends along the first direction R1.

[0055] For example, the angle between the first direction R1 and the second direction R2 can be set between 70° and 90°, including 70° and 90°. For example, the angle between the first direction R1 and the second direction R2 can be 70°, 75°, 80°, 85° or 90°, etc. The specific value of the angle can be set according to actual conditions, and the embodiments of the present disclosure do not impose specific restrictions on this.

[0056] For example, in the touch substrate provided in the embodiments of the present disclosure, the first direction R1 can be arranged to be perpendicular to the second direction R2. When the touch substrate provided in the embodiments of the present disclosure is applied to, for example, a display panel or a display device, the first direction R1 can be the column direction of the sub-pixel array in the display panel or the display device, and the second direction R2 can be the row direction of the sub-pixel array in the display panel or the display device; alternatively, the first direction R1 can be the row direction of the sub-pixel array in the display panel or the display device, and the second direction R2 can be the column direction of the sub-pixel array in the display panel or the display device, and the embodiments of the present disclosure are not limited in this regard.

[0057] like Figure 2 and Figure 3 As shown, each first touch electrode 100 includes a plurality of first touch sub-electrodes 101 and a plurality of first connecting electrodes 102. The plurality of first touch sub-electrodes 101 are arranged along the second direction R2, and the first connecting electrode 102 is located between two adjacent first touch sub-electrodes 101 in the second direction R2, so that the two adjacent first touch sub-electrodes 101 are electrically connected to each other through the first connecting electrodes 102. Each second touch electrode 200 includes a plurality of second touch sub-electrodes 201 and a plurality of second connecting electrodes 202. The plurality of second touch sub-electrodes 201 are arranged along the first direction R1, and the second connecting electrode 202 is located between two adjacent second touch sub-electrodes 201 in the first direction R1, so that the two adjacent second touch sub-electrodes 201 are electrically connected to each other through the second connecting electrodes 202.

[0058] It should be noted that Figure 2 The number of first touch sub-electrodes 101 and first connecting electrodes 102 included in the first touch electrode 100 and the number of second touch sub-electrodes 201 and second connecting electrodes 202 included in the second touch electrode 200 shown in the figure are merely exemplary descriptions, and the embodiments of the present disclosure do not impose specific limitations on this.

[0059] It should be noted that Figure 2 The main outlines of the first touch sub-electrode 101 in the first touch electrode 100 and the second touch sub-electrode 201 in the second touch electrode 200 are both rhombus-shaped. However, in some other embodiments of the present disclosure, the first touch sub-electrode 101 and the second touch sub-electrode 201 may also adopt other regular or irregular shapes, such as triangles, rectangles, hexagons, octagons, and strips, and the embodiments of the present disclosure are not limited to this. For example, the main outlines of the first touch sub-electrode 101 and the second touch sub-electrode 201 may be the same or different.

[0060] The second touch sub-electrode 201 and the second connection electrode 202 are respectively located in different conductive layers relative to the base substrate 10. Figure 3As shown, the second touch sub-electrode 201 is located in the first conductive layer 110 on the base substrate 10, and the second connection electrode 202 is located in the second conductive layer 120 on the base substrate 10. For example, in some embodiments, the first touch sub-electrode 101 and the first connection electrode 102 can be located in the same conductive layer relative to the base substrate 10, for example, Figure 3 As shown, they are all located in the first conductive layer 110 , that is, they can be located in the same conductive layer as the second touch sub-electrode 201 , and are, for example, insulated from the second touch sub-electrode 201 .

[0061] The following embodiments of the present disclosure are Figure 2 and Figure 3 Taking the case where the first touch sub-electrode 101, the first connecting electrode 102 and the second touch sub-electrode 201 shown in the figure are all located in the first conductive layer 110, and the second connecting electrode 202 is located in the second conductive layer 120 as an example, the touch substrate provided in some embodiments of the present disclosure is specifically described, but it should be noted that the embodiments of the present disclosure include but are not limited to this.

[0062] For example, Figure 4A for Figure 2 An example of a partially enlarged schematic diagram of the region RG1 shown in FIG;

[0063] Figure 4B for Figure 4A Schematic diagram of the connector electrode shown in, e.g. Figure 4B Shown Figure 4A A schematic structural diagram of the connecting sub-electrode 210 (eg, including a first connecting sub-electrode 211 and a second connecting sub-electrode 212 ); Figure 5 A schematic diagram of a connecting sub-electrode provided in some embodiments of the present disclosure, for example Figure 5 The connector electrodes shown may correspond to Figure 4A and 4B The first connecting sub-electrode 211 shown in FIG; Figure 6 A schematic diagram of another connecting sub-electrode provided in some embodiments of the present disclosure, for example Figure 6 The connector electrodes shown may correspond to Figure 4A and Figure 4B The second connecting sub-electrode 212 is shown in FIG.

[0064] It should be noted that Figure 4AIn order to clearly indicate the first touch sub-electrode 101, the first connecting electrode 102, and the second touch sub-electrode 201, a dotted frame is used to roughly indicate the portion corresponding to the first touch sub-electrode 101 and the first connecting electrode 102. For example, the dotted frame may roughly correspond to the dividing boundary between the first touch sub-electrode 101, the first connecting electrode 102, and the second touch sub-electrode 201. However, it should be noted that the dotted frame is only used to indicate the approximate positions of the first touch sub-electrode 101 and the first connecting electrode 102, and is not used to indicate the specific edge or boundary line of the first touch sub-electrode 101 or the first connecting electrode 102.

[0065] In some embodiments of the present disclosure, the second connection electrode 202 includes at least one connection sub-electrode 210, which may be, for example, Figure 4A and Figure 4B The figure shows two connecting sub-electrodes 210, namely a first connecting sub-electrode 211 and a second connecting sub-electrode 212. The two ends of each connecting sub-electrode 210 are respectively connected to two adjacent second touch sub-electrodes 201. Figure 4A At the positions RG21 and RG22 shown in FIG, the first connecting sub-electrode 211 is connected to two adjacent second touch sub-electrodes 201, for example, by respectively connecting through vias H1 and H2 (for details, please refer to the corresponding content below); Figure 4A At the positions RG31 and RG32 shown in FIG, the second connecting sub-electrode 212 is also connected to the two adjacent second touch sub-electrodes 201 , for example, the connection can also be achieved through the via holes H1 and H2 , respectively.

[0066] The orthographic projection of each connecting sub-electrode 210 on the base substrate 10 overlaps with the orthographic projection of one first touch sub-electrode 101 on the base substrate 10. Figure 2 、 Figure 4A and Figure 4B As shown, a second connecting electrode 202 is adjacent to two first touch sub-electrodes 101 in the second direction R2, and the positive projection of a connecting sub-electrode 210 (for example, the first connecting sub-electrode 211 or the second connecting sub-electrode 212) included in the second connecting electrode 202 on the base substrate 10 overlaps with the positive projection of one of the two first touch sub-electrodes 101 on the base substrate 10, that is, the connecting sub-electrode 210 included in the second connecting electrode 202 overlaps with one of the first touch sub-electrodes 101 adjacent to the second connecting electrode 202 in the direction perpendicular to the base substrate 10 (for example, Figure 3 overlap each other in the direction R3) shown in FIG.

[0067] For example, in Figure 4A and Figure 4BIn the example shown, the first connecting sub-electrode 211 in the second connecting electrode 202 and the first touch sub-electrode 101 located on the left side of the second connecting electrode 202 in the second direction R2 overlap with each other in a direction perpendicular to the base substrate 10, and the second connecting sub-electrode 212 in the second connecting electrode 202 and the first touch sub-electrode 101 located on the right side of the second connecting electrode 202 in the second direction R2 overlap with each other in a direction perpendicular to the base substrate 10.

[0068] It should be noted that, in some examples, some of the connecting sub-electrodes 210 in the second connecting electrode 202 may overlap with a first touch sub-electrode 101 adjacent to the second connecting electrode 202 in the second direction R2 in a direction perpendicular to the base substrate 10, while another portion of the connecting sub-electrodes 210 in the second connecting electrode 202 may not overlap with any of the first touch sub-electrodes 101 adjacent to the second connecting electrode 202 in the second direction R2 in a direction perpendicular to the base substrate 10. For example, a connecting sub-electrode 210 in the second connecting electrode 202 that is relatively close to a first touch sub-electrode 101 adjacent to the second connecting electrode 202 may overlap with the first touch sub-electrode 101 in a direction perpendicular to the base substrate 10. Alternatively, in some examples, each connecting sub-electrode 210 in the second connecting electrode 202 may overlap with a first touch sub-electrode 101 adjacent to the second connecting electrode 202 in a direction perpendicular to the base substrate 10. The embodiments of the present disclosure are not limited in this regard.

[0069] like Figures 4A to 6 As shown, each connecting sub-electrode 210 includes at least one first fold line portion 231 and at least one second fold line portion 232. For example, referring to Figure 4B As shown, the first connecting sub-electrode 211 (ie, a connecting sub-electrode 210 ) includes two first fold line portions 231 and two second fold line portions 232 , and the second connecting sub-electrode 212 (ie, a connecting sub-electrode 210 ) includes two first fold line portions 231 and two second fold line portions 232 .

[0070] It should be noted that the embodiments of the present disclosure do not limit the number of first fold line portions 231 and second fold line portions 232 included in the connecting sub-electrode 210. For example, the number of first fold line portions 231 included in the connecting sub-electrode 210 may be 1, 3, 4, or more, and the number of second fold line portions 232 included in the connecting sub-electrode 210 may be 1, 3, 4, or more. For example, the number of first fold line portions 231 and the number of second fold line portions 232 included in a connecting sub-electrode 210 may be the same or different.

[0071] like Figures 4A to 6As shown, the fold line shape of the first fold line portion 231 is approximately V-shaped, and the fold line shape of the second fold line portion 232 is approximately V-shaped. The opening of the fold line shape of the first fold line portion 231 and the opening of the fold line shape of the second fold line portion 232 are arranged relative to each other along the second direction R2. For example, the fold line shape of the first fold line portion 231 is open to the right, and the fold line shape of the second fold line portion 232 is open to the left, thereby making the openings of the fold line shapes of the first fold line portion 231 and the second fold line portion 232 relative to each other in the second direction R2. Alternatively, it can also be understood that the fold line shape of the first fold line portion 231 protrudes to the left, and the fold line shape of the second fold line portion 232 protrudes to the right, thereby making the protruding directions of the fold line shapes of the first fold line portion 231 and the second fold line portion 232 opposite to each other in the second direction R2, and the fold line shape of the first fold line portion 231 protrudes in a direction away from the second fold line portion 232, and the fold line shape of the second fold line portion 232 protrudes in a direction away from the first fold line portion 231.

[0072] It should be noted that the above-mentioned "the fold line shape is approximately V-shaped" means that the overall contour of the fold line shape is approximately V-shaped, and the two line segments connected to each other that constitute the fold line shape can be straight line segments extending in a straight line, or can be line segments extending in, for example, a fold line, a zigzag shape, or other suitable shapes. In other words, the embodiments of the present disclosure do not limit the specific shapes of the two line segments constituting the first fold line portion 231 and the two line segments constituting the second fold line portion 232. For example, the edges of the two line segments constituting the first fold line portion 231 can include a straight line, a fold line, a zigzag shape, a triangle, a wave shape, or other suitable shapes, and the edges of the two line segments constituting the second fold line portion 232 can include a straight line, a fold line, a zigzag shape, a triangle, a wave shape, or other suitable shapes, and the embodiments of the present disclosure do not impose specific restrictions on this.

[0073] In the touch control substrate provided in the above embodiment of the present disclosure, the openings of the first fold line portion 231 and the second fold line portion 232 in the connecting sub-electrode 210, which are approximately V-shaped, are arranged relative to each other in the second direction R2. For example, the bending directions or protruding directions of the fold line shapes of the first fold line portion 231 and the second fold line portion 232 are opposite to each other and face back to back in the second direction R2. This can make the layout of the first fold line portion 231 and the second fold line portion 232 between the two adjacent second touch control sub-electrodes 201 relatively dispersed. For example, the relatively concentrated or tight arrangement of the first fold line portion 231 and the second fold line portion 232 can be weakened or avoided to a certain extent. Furthermore, the connection between the connecting sub-electrode 210 and, for example, other film layers or structures in the touch control substrate can be made correspondingly in a direction perpendicular to the base substrate 10 (for example, Figure 3 The overlapping areas that may be generated in the direction R3) shown in FIG are relatively dispersed, which is conducive to reducing or avoiding the electrode visualization phenomenon and optimizing the optical performance of the touch substrate.

[0074] For example, each connecting sub-electrode 210 is continuously disposed between two adjacent second touch sub-electrodes 201. In other words, each connecting sub-electrode 210 remains continuous and uninterrupted between two adjacent second touch sub-electrodes 201. For example, the connecting sub-electrode 210 can be integrally disposed between two adjacent second touch sub-electrodes 201. For example, each portion of a connecting sub-electrode 210 can be formed using the same manufacturing process and the same material layer.

[0075] For example, in some embodiments, Figures 4A to 6 As shown, each connecting sub-electrode 210 (for example, the first connecting sub-electrode 211 and the second connecting sub-electrode 212) includes a plurality of first fold line portions 231 and a plurality of second fold line portions 232, for example, two first fold line portions 231 and two second fold line portions 232. The plurality of first fold line portions 231 are sequentially arranged and connected in sequence along the first direction R1, for example, two adjacent first fold line portions 231 are connected end to end, that is, the ends of the two adjacent first fold line portions 231 that are close to each other are connected together; the plurality of second fold line portions 232 are sequentially arranged and connected in sequence along the first direction R1, for example, two adjacent second fold line portions 232 are connected end to end, that is, the ends of the two adjacent second fold line portions 232 that are close to each other are connected together. For example, Figures 4A to 6 As shown, the two first fold line portions 231 connected in sequence and the two second fold line portions 232 connected in sequence included in the connecting sub-electrode 210 can form a structure similar to an "8" shape.

[0076] For example, in Figures 4A to 6 In the embodiment shown, in the connecting sub-electrode 210, for the first fold line portion 231 and the second fold line portion 232 close to the same second touch sub-electrode 201, one end of the first fold line portion 231 close to the second touch sub-electrode 201 and one end of the second fold line portion 232 close to the second touch sub-electrode 201 are connected together, thereby making the formed connecting sub-electrode 210 continuously arranged between the two adjacent second touch sub-electrodes 201.

[0077] It should be noted that in some other embodiments of the present disclosure, the end of the first fold line portion 231 close to the second touch sub-electrode 201 and the end of the second fold line portion 232 close to the second touch sub-electrode 201 may not be connected together. For example, the first fold line portion 231 and the second fold line portion 232 may also be connected through other routing structures, for example, and the embodiments of the present disclosure do not impose specific restrictions on this.

[0078] For example, in Figures 4A to 6In the embodiment shown, the second connection electrode 202 includes a plurality of connection sub-electrodes 210, namely, a first connection sub-electrode 211 and a second connection sub-electrode 212. The first connection sub-electrode 211 and the second connection sub-electrode 212 are arranged along the second direction R2 and are connected to the second touch sub-electrode 201 at different positions. Figure 4A The second touch sub-electrodes 201 located above Figure 4A The first connecting sub-electrode 211 and the second connecting sub-electrode 212 are connected to the positions RG21 and RG31 shown in FIG. Figure 4A The second touch sub-electrodes 201 located at the bottom are respectively Figure 4A RG22 and RG32 are connected as shown in FIG. Thus, the layout of the multiple connecting sub-electrodes 210 in the second connecting electrode 202 between the two adjacent second touch sub-electrodes 201 can be relatively dispersed, and the overlapping areas between the connecting sub-electrodes 210 and, for example, other film layers or structures in the touch substrate in a direction perpendicular to the base substrate 10 can also be relatively dispersed, thereby helping to reduce or avoid electrode visualization and improve the optical performance of the touch substrate.

[0079] In some embodiments of the present disclosure, Figure 4B As shown, the first fold line portion 231 and the second fold line portion 232 are arranged along the second direction R2, and the vertex V1 of the fold line shape of the first fold line portion 231 and the vertex V2 of the fold line shape of the second fold line portion 232 are approximately located on the first straight line L1 extending along the second direction R2. As a result, the first fold line portion 231 and the second fold line portion 232 can be relatively evenly distributed between two adjacent second touch sub-electrodes 201, thereby making the overlapping area between the connecting sub-electrode 210 and other film layers or structures in the touch substrate, such as in the direction perpendicular to the base substrate 10, more evenly distributed. At the same time, the impedance consistency of the first fold line portion 231 and the second fold line portion 232 can be further improved, thereby improving the signal transmission effect on the connecting sub-electrode 210.

[0080] In some embodiments of the present disclosure, Figure 4BAs shown, the fold-line opening of the first fold-line portion 231 and the fold-line opening of the second fold-line portion 232 are approximately axisymmetric with respect to a second straight line L2 extending along the first direction R1. For example, the overall V-shaped profile of the fold-line shape of the first fold-line portion 231 and the overall V-shaped profile of the fold-line shape of the second fold-line portion 232 are approximately axisymmetric with respect to the second straight line L2. This further improves the uniformity of the distribution of the first fold-line portion 231 and the second fold-line portion 232 between two adjacent second touch sub-electrodes 201, thereby making the overlapping area between the connecting sub-electrode 210 and, for example, other film layers or structures in the touch substrate, in a direction perpendicular to the base substrate 10, more uniformly distributed. Furthermore, this further improves the impedance consistency of the first fold-line portion 231 and the second fold-line portion 232, thereby further enhancing the signal transmission effect on the connecting sub-electrode 210.

[0081] Below is Figure 5 Taking the first connecting sub-electrode 211 shown in FIG as an example, the structure of the connecting sub-electrode 210 is further described. It should be noted that, Figure 6 The structure of the second connecting sub-electrode 212 shown in FIG is substantially similar to that of the first connecting sub-electrode 211 , and reference may be made to the corresponding contents regarding the first connecting sub-electrode 211 , which will not be repeated here.

[0082] For example, combined with Figures 4A to 5 As shown, the first connecting sub-electrode 211 includes a first contact portion 241, a second contact portion 242 and a plurality of connecting portions 250. The first contact portion 241 and the second contact portion 242 serve as the two ends of the first connecting sub-electrode 211, respectively, and are connected to the two adjacent second touch sub-electrodes 201. The plurality of connecting portions 250 are located between the first contact portion 241 and the second contact portion 242, and are arranged along the second direction R2. The two ends of each connecting portion 250 are connected to the first contact portion 241 and the second contact portion 242, respectively. The plurality of connecting portions 250 include a first connecting portion 251 and a second connecting portion 252, the first connecting portion 251 includes a first fold line portion 231, and the second connecting portion 252 includes a second fold line portion 232. In other words, the first fold line portion 231 constitutes the first connecting portion 251, and the second fold line portion 232 constitutes the second connecting portion 252.

[0083] For example, the two first fold lines 231 included in the first connecting sub-electrode 211 are sequentially arranged along the first direction R1 and sequentially connected to form a first connecting portion 251; the two second fold lines 232 included in the first connecting sub-electrode 211 are sequentially arranged along the first direction R1 and sequentially connected to form a second connecting portion 252. Thus, two adjacent second touch sub-electrodes 201 can be electrically connected via the first contact portion 241, the first connecting portion 251, the second connecting portion 252, and the second contact portion 242.

[0084] It should be noted that, for example, Figure 5 As shown, the first contact portion 241 and the second contact portion 242 can be understood as a portion similar to a paper clip shape formed by three line segments connected in sequence; or, it can also be understood as a portion approximately in the shape of a square formed by four line segments connected in sequence, that is, the second fold line portion 232 and the first contact portion 241 or the second contact portion 242 share a portion of the connecting sub-electrode 210, which can serve as either the second fold line portion 232 or the first contact portion 241 or the second contact portion 242.

[0085] For example, Figures 4A to 5 As shown, the center of the first contact portion 241 and the center of the second contact portion 242 are approximately located on the fifth straight line L5 extending along the first direction R1, which is beneficial to improving the consistency of the signal transmission load between the two adjacent second touch sub-electrodes 201, thereby improving the signal transmission effect in the second touch electrode 200.

[0086] For example, Figures 4A to 5 As shown, the vertices V1 of the plurality of first fold line portions 231 are approximately located on a third straight line L3 extending along the first direction R1. This allows the plurality of first fold line portions 231 constituting the first connecting portion 251 to be relatively evenly arranged along the first direction R1, thereby improving the consistency of the signal transmission load on the first connecting portion 251 and, in turn, improving the signal transmission performance of the connecting sub-electrode 210. The vertices V2 of the plurality of second fold line portions 232 are approximately located on a fourth straight line L4 extending along the first direction R1. This allows the plurality of second fold line portions 232 constituting the second connecting portion 252 to be relatively evenly arranged along the first direction R1, thereby improving the consistency of the signal transmission load on the second connecting portion 252 and, in turn, improving the signal transmission performance of the connecting sub-electrode 210.

[0087] For example, combined with Figures 2 to 6 As shown, the touch control substrate includes a first conductive layer 110, an insulating layer 130, and a second conductive layer 120 located on a base substrate 10. The insulating layer 130 is located between the first conductive layer 110 and the second conductive layer 120. The first conductive layer 110 and the second conductive layer 120 are separated and insulated from each other in a direction perpendicular to the base substrate 10 by the insulating layer 130. The second touch sub-electrode 201 is located on the first conductive layer 110, and the second connecting electrode 202 is located on the second conductive layer 120. The first contact portion 241 passes through at least one first via hole H1 that penetrates at least the insulating layer 130, for example Figure 4A The four first via holes H1 shown in FIG. 1 are connected to the second touch sub-electrode 201 ; the second contact portion 242 passes through at least one second via hole H2 that penetrates the insulating layer 130 , for example Figure 4A The four second via holes H2 shown in FIG. 1 are connected to the second touch sub-electrodes 201 .

[0088] It should be noted that the embodiments of the present disclosure do not limit the specific number of the first via holes H1 and the second via holes H2. Figures 9 to 11 In the illustrated embodiment, the number of first vias H1 and second vias H2 can be 5 each; alternatively, in other embodiments of the present disclosure, the number of first vias H1 can be 1, 2, 3, 6, or more, and the number of second vias H2 can be 1, 2, 3, 6, or more, and the embodiments of the present disclosure are not specifically limited thereto. It should be noted that in the embodiments of the present disclosure, the number of first vias H1 and the number of second vias H2 can be the same or different.

[0089] For example, combined with Figures 2 to 6 As shown, the first contact portion 241 of the second connection electrode 202 at least partially overlaps with the second touch sub-electrode 201 in a direction R3 perpendicular to the base substrate 10 to form the first via hole H1. The second contact portion 242 of the second connection electrode 202 at least partially overlaps with the second touch sub-electrode 201 in a direction R3 perpendicular to the base substrate 10 to form the second via hole H2.

[0090] For example, in Figures 2 to 6 In the embodiment shown, the first conductive layer 110 is located on a side of the second conductive layer 120 away from the base substrate 10. Alternatively, in other embodiments of the present disclosure, the second conductive layer 120 may be located on a side of the first conductive layer 110 away from the base substrate 10.

[0091] For example, Figures 2 to 6 In the embodiment shown, the first conductive layer 110 can be a conductive layer on the side closer to the user relative to the second conductive layer 120. Therefore, when the first touch sub-electrode 101, the first connecting electrode 102 and the second touch sub-electrode 201 are all located in the first conductive layer 110, the accuracy and sensitivity of the signal received from the user side on the first touch electrode 100 and the second touch electrode 200 can be improved, thereby improving the touch sensitivity of the touch substrate.

[0092] In some examples of the present disclosure, Figures 2 to 6 As shown, the first touch sub-electrode 101, the second touch sub-electrode 201, the first connection electrode 102 and the second connection electrode 202 respectively include a grid structure formed by a plurality of metal grids 300. For example, a metal grid 300 may be Figure 4A A closed metal grid 301 shown in FIG. Figure 4A A non-closed metal mesh 302 is shown in FIG.

[0093] It should be noted that Figures 4A to 6The pattern of the grid structure shown in the figure (such as the outline, the number, size, shape, etc. of the metal grids included) is only an example. The embodiments of the present disclosure do not limit the number of metal grids 300 formed in the grid structure, such as shape, outline, size, and other specific pattern features.

[0094] It should be noted that Figures 4A to 6 The number, shape, size, etc. of the metal grid 300, the closed metal grid 301, and the non-closed metal grid 302 shown in the figure are only exemplary descriptions, and the embodiments of the present disclosure do not impose specific limitations on them. Figures 4A to 6 The metal grids 300 in the grid-like structure shown in the figure are all polygonal, for example, quadrilaterals, while in some other embodiments of the present disclosure, the shape of the metal grid 300 can also be other polygons, such as triangles, pentagons, hexagons, etc., and can be designed according to actual needs. The embodiments of the present disclosure do not limit the specific shape, size, etc. of the metal grid 300.

[0095] Figure 7 for Figure 5 A schematic diagram of the overlapping position between the connecting sub-electrode and the first touch electrode in a direction perpendicular to the substrate shown in FIG. Figure 8 for Figure 6 Schematic diagram of the overlapping position between the connecting sub-electrode and the first touch electrode in the direction perpendicular to the base substrate.

[0096] For example, combined with Figures 2 to 8 As shown, the area enclosed by the orthographic projection of the connecting sub-electrode 210 of the second connecting electrode 202 on the base substrate 10 at least partially overlaps with the area enclosed by the orthographic projection of the first touch electrode 100 on the base substrate 10, so that the connecting sub-electrode 210 of the second connecting electrode 202 and the first touch electrode 100 include an overlapping area in a direction R3 perpendicular to the base substrate 10. For example, the connecting sub-electrode 210 of the second connecting electrode 202 and the first connecting electrode 102 of the first touch electrode 100 include an overlapping area in the direction R3 perpendicular to the base substrate 10. The grid-like structure of the first touch electrode 100 includes at least one metal mesh 300, such as one or more closed metal meshes 301 or open metal meshes 302, located in the overlapping area. As a result, the overlapping portion between the connecting sub-electrode 210 and the first touch electrode 100 in the direction R3 perpendicular to the base substrate 10 can be relatively dispersed, thereby reducing or preventing electrode visualization on the touch substrate and further improving the optical performance of the touch substrate.

[0097] For example, Figure 7 and Figure 8As shown, the metal grid 300 in the overlapping region includes one or more closed metal grids 301. This can, for example, reduce the signal transmission load on the first connection electrode 102 in the first touch electrode 100 used to connect the first touch sub-electrodes 101, improve the connectivity between the first connection electrode 102 and two adjacent first touch sub-electrodes 101, and further improve the signal transmission effect on the first touch electrode 100.

[0098] For example, combined with Figures 2 to 8 As shown, in a direction R3 perpendicular to the base substrate 10, the first fold line portion 231 of the connecting sub-electrode 210 overlaps with the first touch electrode 100 at one or more first positions P1. In the direction R3 perpendicular to the base substrate 10, the second fold line portion 232 of the connecting sub-electrode 210 overlaps with the first touch electrode 100 at one or more second positions P2.

[0099] For example, Figure 7 Taking the first connecting sub-electrode 211 shown in the figure as an example, the first touch electrode 100 overlaps with the first fold line portion 231 located above in the first connecting sub-electrode 211 at two first positions P1, and overlaps with the first fold line portion 231 located below in the first connecting sub-electrode 211 at two first positions P1; the first touch electrode 100 overlaps with the second fold line portion 232 located above in the first connecting sub-electrode 211 at two second positions P2, and overlaps with the second fold line portion 232 located below in the first connecting sub-electrode 211 at two second positions P2.

[0100] For example, Figure 8 Taking the second connecting sub-electrode 212 shown in the figure as an example, the first touch electrode 100 overlaps with the first fold line portion 231 located above in the second connecting sub-electrode 212 at two first positions P1, and overlaps with the first fold line portion 231 located below in the second connecting sub-electrode 212 at two first positions P1; the first touch electrode 100 overlaps with the second fold line portion 232 located above in the second connecting sub-electrode 212 at two second positions P2, and overlaps with the second fold line portion 232 located below in the second connecting sub-electrode 212 at two second positions P2.

[0101] For example, combined with Figures 2 to 8As shown, the first fold line portion 231 includes a first line segment portion 2311 and a second line segment portion 2312. One end of the first line segment portion 2311 and one end of the second line segment portion 2312 connect to each other, forming a fold line shape that is approximately V-shaped. In a direction R3 perpendicular to the base substrate 10, the first fold line portion 231 connecting the sub-electrode 210 overlaps with the first touch electrode 100 at multiple first positions P1. These multiple first positions P1 are located in the first line segment portion 2311 and / or the second line segment portion 2312. The second fold line portion 232 includes a third line segment portion 2321 and a fourth line segment portion 2322. One end of the third line segment portion 2321 and one end of the fourth line segment portion 2322 connect to each other, forming a fold line shape that is approximately V-shaped. In a direction R3 perpendicular to the base substrate 10 , the second fold line portion 232 of the connecting sub-electrode 210 overlaps with the first touch electrode 100 at a plurality of second positions P2 , which are located at the third line segment 2321 and / or the fourth line segment 2322 .

[0102] For example, Figure 7 Taking the first connecting sub-electrode 211 shown in the figure as an example, the two first positions P1 overlapping each other between the first touch electrode 100 and the first fold line portion 231 located above in the first connecting sub-electrode 211 are both located in the first line segment portion 2311, and the two first positions P1 overlapping each other between the first touch electrode 100 and the first fold line portion 231 located below in the first connecting sub-electrode 211 are both located in the second line segment portion 2312; the two second positions P2 overlapping each other between the first touch electrode 100 and the second fold line portion 232 located above in the first connecting sub-electrode 211 are respectively located in the third line segment portion 2321 and the fourth line segment portion 2322, and the two second positions P2 overlapping each other between the first touch electrode 100 and the second fold line portion 232 located below in the first connecting sub-electrode 211 are respectively located in the third line segment portion 2321 and the fourth line segment portion 2322.

[0103] For example, Figure 8 Taking the second connecting sub-electrode 212 shown in the figure as an example, the two first positions P1 overlapping each other between the first touch electrode 100 and the first fold line portion 231 located at the upper part of the second connecting sub-electrode 212 are respectively located at the first line segment portion 2311 and the second line segment portion 2312, and the two first positions P1 overlapping each other between the first touch electrode 100 and the first fold line portion 231 located at the lower part of the second connecting sub-electrode 212 are respectively located at the first line segment portion 2311 and the second line segment portion 2312; the two second positions P2 overlapping each other between the first touch electrode 100 and the second fold line portion 232 located at the upper part of the second connecting sub-electrode 212 are both located at the third line segment portion 2321, and the two second positions P2 overlapping each other between the first touch electrode 100 and the second fold line portion 232 located at the lower part of the second connecting sub-electrode 212 are both located at the fourth line segment portion 2322.

[0104] Figure 9 for Figure 2 A partially enlarged schematic diagram of another example of the region RG1 shown in FIG. Figure 10 A schematic diagram of another connecting sub-electrode provided in some embodiments of the present disclosure, for example, Figure 10 The connector electrodes shown may correspond to Figure 9 The connecting sub-electrode 210 (eg, the first connecting sub-electrode 211 or the second connecting sub-electrode 212 ) shown in FIG. Figure 11 for Figure 10 Schematic diagram of the overlapping position between the connecting sub-electrode and the first touch electrode in the direction perpendicular to the substrate. It should be noted that, in addition to the first contact portion 241 and the second contact portion 242 in the connecting sub-electrode 210, Figures 9 to 11 The connecting sub-electrode 210 shown in FIG. Figures 4A to 8 The structure and function of the connecting sub-electrode 210 shown in FIG. 1 are substantially the same or similar, and the repeated parts are not repeated here.

[0105] In some embodiments of the present disclosure, Figures 9 to 11 As shown, the first contact portion 241 includes a plurality of first sub-contact portions 2411, which are spaced apart from each other. For example, the plurality of first sub-contact portions 2411 may be spaced apart along the second direction R2. The first connecting portion 251 and the second connecting portion 252 of the connecting sub-electrode 210 are respectively connected to different first sub-contact portions 2411 in the first contact portion 241, so that the plurality of first sub-contact portions 2411 are electrically connected to each other through the first connecting portion 251 and the second connecting portion 252. The second contact portion 242 includes a plurality of second sub-contact portions 2421, which are spaced apart from each other. For example, the plurality of second sub-contact portions 2421 may be spaced apart along the second direction R2. The first connecting portion 251 and the second connecting portion 252 are respectively connected to different second sub-contact portions 2421 in the second contact portion 242, so that the plurality of second sub-contact portions 2421 are electrically connected to each other through the first connecting portion 251 and the second connecting portion 252.

[0106] It should be noted that, for example, Figure 10 As shown, the first contact portion 241 and the second contact portion 242 as a whole can also be understood as a portion similar to a "W" shape composed of five line segments connected in sequence, that is, the first connection portion 251 and the second connection portion 252 share a part of the connecting sub-electrode 210 with the first contact portion 241, and share a part of the connecting sub-electrode 210 with the second contact portion 242.

[0107] For example, in Figures 9 to 11 In the embodiment shown, compared with the above Figures 4A to 8In the embodiment shown, more (eg, Figure 9 The five first via holes H1 shown in FIG are electrically connected, and more (eg, Figure 9 The five second via holes H2 shown in FIG. 5 are electrically connected to each other, thereby further improving the stability of the electrical connection between the second touch sub-electrode 201 and the connecting sub-electrode 210.

[0108] For example, the first connecting portion 251 and the second connecting portion 252 are approximately axisymmetric with respect to a second straight line L2 extending along the first direction R1. The centers of the plurality of first sub-contact portions 2411 and the centers of the plurality of second sub-contact portions 2421 are approximately located on the second straight line L2. In other words, the centers of the first contact portion 241 and the second contact portion 242 are approximately located on the second straight line L2. This helps further enhance the stability and consistency of the signal transmission load between two adjacent second touch sub-electrodes 201, thereby improving the signal transmission effect in the second touch electrode 200.

[0109] For example, in Figures 9 to 11 In the illustrated embodiment, the four first locations P1 where the first touch electrode 100 overlaps with the first fold line portion of the connecting sub-electrode 210 are roughly evenly distributed along the first direction R1. The four second locations P2 where the first touch electrode 100 overlaps with the second fold line portion of the connecting sub-electrode 210 are roughly evenly distributed along the first direction R1. This makes the distribution of the overlapping locations between the connecting sub-electrode 210 and the first touch electrode 100 in the direction R3 perpendicular to the base substrate 10 relatively more uniform, thereby further reducing or preventing electrode visualization and optimizing the optical performance of the touch substrate.

[0110] In some embodiments of the present disclosure, the material of the metal grid in the grid structure of the first touch electrode 100 and the second touch electrode 200 may include metal materials such as aluminum, molybdenum, copper, silver, or alloy materials of these metal materials, such as silver palladium copper alloy (APC) material.

[0111] For example, the material of the insulating layer 130 can be an inorganic insulating material, for example, the inorganic insulating material is a transparent material. For example, the inorganic insulating material can be a silicon oxide, silicon nitride, or silicon oxynitride, such as silicon oxide, silicon nitride, or silicon oxynitride, or a metal oxynitride insulating material such as aluminum oxide or titanium nitride.

[0112] For example, the insulating layer 130 may be made of an organic insulating material to achieve good bending resistance. For example, the organic insulating material is a transparent material. For example, the organic insulating material is an OCA optical adhesive. For example, the organic insulating material may include polyimide (PI), acrylate, epoxy resin, polymethyl methacrylate (PMMA), etc.

[0113] It should be noted that, in some other embodiments, two adjacent first touch sub-electrodes 101 in the second direction R2 may be connected by a bridging structure, while two adjacent second touch sub-electrodes 201 in the first direction R1 may be connected by, for example, a connecting electrode that is located in the same layer as the second touch sub-electrode 201 and is integrally formed. That is, the electrical connection method adopted between the two adjacent first touch sub-electrodes 101 in the second direction R2 and the electrical connection method adopted between the two adjacent second touch sub-electrodes 201 in the first direction R1 can be interchangeable with each other.

[0114] In some embodiments of the present disclosure, the first touch electrode 100 and the second touch electrode 200 are insulated from each other. The first touch electrode 100 may be a touch driving electrode, and the second touch electrode 200 may be a touch sensing electrode; or the first touch electrode 100 may be a touch sensing electrode, and the second touch electrode 200 may be a touch driving electrode. The embodiments of the present disclosure are not limited to this.

[0115] For example, when the touch substrate is applied to a display panel or a display device, each first touch electrode 100 and each second touch electrode 200 can be electrically connected to a signal line, and then connected to a touch controller or a touch integrated circuit through the signal line. For example, in the case where the first touch electrodes 100 are touch sensing electrodes and the second touch electrodes 200 are touch driving electrodes, the touch integrated circuit can be, for example, a touch chip, configured to provide touch driving signals to the second touch electrodes 200, receive touch sensing signals from the first touch electrodes 100, and process the received touch sensing signals, such as providing the processed data / signals to a system controller, to implement touch sensing functionality. For example, the ends of the signal lines connected to the touch integrated circuit can be arranged on the same side of the touch area of ​​the display panel to facilitate connection with the touch integrated circuit; or, a signal line can be set at both ends of a second touch electrode 200. When working, the touch integrated circuit simultaneously inputs touch drive signals to a second touch electrode 200 in both directions through two signal lines (bilateral drive), so that the speed of signal loading on the second touch electrode 200 is increased, thereby improving the detection speed.

[0116] In the touch substrate provided in the embodiment of the present disclosure, since the first touch sub-electrode 101 and the second touch sub-electrode 201 both have a shape similar to a rhombus, and the extension direction of each side of the rhombus (for example, the extension direction of each edge of the first touch sub-electrode 101 and the second touch sub-electrode 201) and the first direction R1 or the second direction R2 have an angle range of 20° to 25°, the edges of each first touch sub-electrode 101 and each second touch sub-electrode 201 can form an angle of 20° to 25° with the row direction or column direction of the sub-pixel array in, for example, a display panel or a display device, thereby reducing or avoiding possible interference between the first touch sub-electrode 101 and the second touch sub-electrode 201 and the sub-pixel array, and reducing or avoiding the occurrence of, for example, moiré phenomena.

[0117] At least one embodiment of the present disclosure further provides a display panel, comprising a display device and the touch substrate described in any embodiment of the present disclosure. In the display panel, the display device and the touch substrate are stacked.

[0118] Figure 12 A schematic block diagram of a display panel provided in some embodiments of the present disclosure. Figure 12 As shown, the display panel 50 includes a display device 501 and a touch substrate 502. For example, the display device 501 and the touch substrate 502 may be stacked, and for example, the touch substrate 502 may be the touch substrate described in any embodiment of the present disclosure.

[0119] For example, in some embodiments of the present disclosure, the display panel 50 may further include an encapsulation layer located between the display device 501 and the touch substrate 502, so as to avoid possible mutual interference between, for example, functional structures or film materials in the display device 501 and the touch substrate 502.

[0120] Figure 13 A schematic structural diagram of a specific example of a display panel 50 provided in some embodiments of the present disclosure.

[0121] like Figure 13 As shown, the touch substrate 502 is located on the display side of the display device 501 , for example, the side closer to the user during use.

[0122] For example, this embodiment describes an OLED display panel as an example. For example, the OLED display panel can be an on-cell or in-cell touch display panel. Of course, in other embodiments, the display panel can also be a liquid crystal display panel. The embodiments of the present disclosure do not limit the specific type of display panel using the touch substrate provided by the embodiments of the present disclosure.

[0123] For example, the display device 501 includes a plurality of sub-pixels arranged in an array. For example, the display panel 50 is an OLED display panel, and the plurality of sub-pixels may include green sub-pixels, red sub-pixels, or blue sub-pixels, etc. Each sub-pixel includes a light-emitting element 23 and a pixel driving circuit that drives the light-emitting element 23 to emit light. The embodiments of the present disclosure do not limit the type and specific composition of the pixel driving circuit. For example, the pixel driving circuit may be a current-driven type or a voltage-driven type, and may be a 2T1C (i.e., two transistors and a capacitor, the two transistors including a driving transistor and a data writing transistor) driving circuit, or may be a driving circuit that further includes a compensation circuit (compensation transistor), a light-emitting control circuit (light-emitting control transistor), a reset circuit (reset transistor), etc. on the basis of 2T1C.

[0124] For clarity, Figure 13 The first transistor 24 in the pixel driving circuit is directly electrically connected to the light-emitting element 23. The first transistor 24 can be a driving transistor configured to operate in a saturated state and control the magnitude of the current driving the light-emitting element 23 to emit light. For example, the first transistor 24 can also be a light-emission control transistor for controlling whether the current driving the light-emitting element 23 to emit light flows. The embodiments of the present disclosure do not limit the specific type of the first transistor.

[0125] For example, the light-emitting element 23 is an organic light-emitting diode, including a first electrode 231, a light-emitting layer 233, and a second electrode 232. One of the first electrode 231 and the second electrode 232 is an anode, and the other is a cathode; for example, the first electrode 231 is an anode, and the second electrode 232 is a cathode. For example, the light-emitting layer 233 is an organic light-emitting layer or a quantum dot light-emitting layer. For example, in addition to the light-emitting layer 233, the light-emitting element 23 may also include auxiliary functional layers such as a hole injection layer, a hole transport layer, an electron injection layer, and an electron transport layer. For example, the light-emitting element 23 may be a top-emitting structure, in which the first electrode 231 is reflective and the second electrode 232 is transmissive or semi-transmissive. For example, the first electrode 231 is a material with a high work function to serve as an anode, such as an ITO / Ag / ITO stacked structure; the second electrode 232 is a material with a low work function to serve as a cathode, such as a semi-transmissive metal or metal alloy material, such as an Ag / Mg alloy material.

[0126] The first transistor 24 includes a gate 341, a gate insulating layer 342, an active layer 343, a first pole 344, and a second pole 345. The second pole 345 is electrically connected to the first electrode 231 of the light-emitting element 23. The embodiments of the present disclosure do not limit the type, material, structure, etc. of the first transistor 24. For example, it can be a top-gate type, a bottom-gate type, etc. For example, the active layer 343 of the first transistor 24 can be amorphous silicon, polycrystalline silicon (low-temperature polycrystalline silicon and high-temperature polycrystalline silicon), an oxide semiconductor (for example, indium gallium tin oxide (IGZO)), etc. For example, the first transistor 24 can be an N-type transistor or a P-type transistor.

[0127] The transistors (e.g., the first transistor 24) used in the embodiments of the present disclosure can all be thin film transistors or field effect transistors or other switching devices with the same characteristics. In the embodiments of the present disclosure, thin film transistors are used as examples for explanation. The source and drain of the transistor used here can be symmetrical in structure, so the source and drain can be structurally indistinguishable. In the embodiments of the present disclosure, in order to distinguish the two poles of the transistor other than the gate, one of the poles is directly described as the first pole and the other pole is directly described as the second pole.

[0128] like Figure 13 As shown, the display device 501 also includes a pixel defining layer 320, which is arranged on the first electrode 231 of the light-emitting element 23, and a plurality of openings 321 are formed therein, respectively exposing the first electrodes 231 of a plurality of sub-pixels, thereby defining a pixel opening area of ​​each sub-pixel, and the light-emitting layer of the sub-pixel is formed in the pixel opening area, and the second electrode 232 is formed as a common electrode (that is, shared by a plurality of sub-pixels).

[0129] like Figure 13 As shown, the display device 501 further includes an encapsulation layer 33 located between the light-emitting element 23 and the touch substrate 502. The encapsulation layer 33 is configured to seal the light-emitting element 23 to prevent moisture and oxygen from penetrating into the light-emitting element 23 and the driving circuit, thereby damaging components such as the light-emitting element 23. For example, the encapsulation layer 33 can be a single-layer structure or a multi-layer structure, such as an organic thin film, an inorganic thin film, or a multi-layer structure comprising alternating layers of organic and inorganic thin films.

[0130] For example, Figure 13 As shown, the display panel 50 further includes a buffer layer 35 located between the display device 501 and the touch substrate 502. For example, the buffer layer 35 is formed on the encapsulation layer 33 to improve the adhesion between the touch substrate 502 and the display device 501. For example, the buffer layer 35 may be an inorganic insulating layer. For example, the material of the buffer layer 35 may be silicon nitride, silicon oxide, or silicon oxynitride. For example, the buffer layer 35 may also include a structure of alternating silicon oxide layers and silicon nitride layers.

[0131] The display panel 50 provided in the embodiment of the present disclosure has both touch function and display function, and has all the technical effects of the touch substrate provided in the above embodiment of the present disclosure, which will not be described in detail here.

[0132] At least one embodiment of the present disclosure further provides an electronic device, which includes the display panel described in any embodiment of the present disclosure, for example, may include the above-mentioned display panel 50.

[0133] Figure 14 This is a schematic block diagram of an electronic device provided in some embodiments of the present disclosure. Figure 14 As shown, the electronic device 60 includes a display panel 601. For example, the display panel 601 can be the display panel described in any embodiment of the present disclosure, such as the display panel 50 in the above embodiment.

[0134] For example, the electronic device may be a display device or a display apparatus with a display function and a touch function, such as an OLED display apparatus, a QLED display apparatus, or a liquid crystal display apparatus.

[0135] For example, the electronic device can be a display, an OLED panel, an OLED TV, a liquid crystal display panel, a liquid crystal display TV, a QLED panel, a QLED TV, an electronic paper, a mobile phone, a tablet computer, a laptop computer, a digital photo frame, a navigator, or any other product or component with display and touch functions.

[0136] There are a few points to note:

[0137] (1) The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure. Other structures may refer to conventional designs.

[0138] (2) For the sake of clarity, the thickness of layers or regions in the drawings used to describe the embodiments of the present disclosure are exaggerated or reduced, i.e., these drawings are not drawn to scale. It is understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "under" another element, the element may be "directly" "on" or "under" the other element or intervening elements may be present.

[0139] (3) In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to form new embodiments.

[0140] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. The protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A touch substrate, comprising: substrate; as well as a plurality of first touch electrodes and a plurality of second touch electrodes located on the base substrate, The plurality of first touch electrodes are arranged along a first direction, and each of the first touch electrodes extends along a second direction different from the first direction; the plurality of second touch electrodes are arranged along the second direction, and each of the second touch electrodes extends along the first direction; Each of the first touch electrodes includes a plurality of first touch sub-electrodes and at least one first connecting electrode, the plurality of first touch sub-electrodes being arranged along the second direction, and each of the first connecting electrodes being located between two adjacent first touch sub-electrodes in the second direction, so as to electrically connect the two adjacent first touch sub-electrodes; Each of the second touch electrodes includes a plurality of second touch sub-electrodes and at least one second connecting electrode, the plurality of second touch sub-electrodes are arranged along the first direction, and each of the second connecting electrodes is located between two adjacent second touch sub-electrodes in the first direction, so as to electrically connect the two adjacent second touch sub-electrodes; The second touch sub-electrode and the second connecting electrode are respectively located in different conductive layers relative to the base substrate; The second connecting electrode includes at least one connecting sub-electrode, and both ends of each connecting sub-electrode are respectively connected to the two adjacent second touch sub-electrodes. The orthographic projection of each of the connecting sub-electrodes on the base substrate overlaps with the orthographic projection of one of the first touch sub-electrodes on the base substrate; Each of the connecting sub-electrodes includes at least one first fold line portion and at least one second fold line portion, The fold line shape of the first fold line portion is approximately V-shaped, the fold line shape of the second fold line portion is approximately V-shaped, and the fold line opening of the first fold line portion and the fold line opening of the second fold line portion are arranged opposite to each other along the second direction; The fold line-shaped opening of the first fold line portion and the fold line-shaped opening of the second fold line portion are substantially axisymmetric with respect to a second straight line extending along the first direction; Each of the connecting sub-electrodes includes a first contact portion, a second contact portion and a plurality of connecting portions; The first contact portion and the second contact portion serve as the two ends of the connecting sub-electrode respectively, and are connected to the two adjacent second touch sub-electrodes. The center of the first contact portion and the center of the second contact portion are approximately located on the fifth straight line extending along the first direction. The connecting sub-electrode includes adjacent first connecting sub-electrodes and second connecting sub-electrodes, and the distance between the second straight line corresponding to the first connecting sub-electrode and the second straight line corresponding to the second connecting sub-electrode is greater than the distance between the fifth straight line in the first connecting sub-electrode and the fifth straight line in the second connecting sub-electrode.

2. The touch substrate according to claim 1, wherein: The first fold line portion and the second fold line portion are arranged along the second direction, and the vertices of the fold line shapes of the first fold line portion and the second fold line portion are substantially located on a first straight line extending along the second direction.

3. The touch substrate according to claim 1 or 2, wherein: The plurality of connecting portions are located between the first contact portion and the second contact portion and are arranged along the second direction, and two ends of each connecting portion are connected to the first contact portion and the second contact portion respectively; The plurality of connection portions include a first connection portion and a second connection portion, the first connection portion includes the first fold line portion, and the second connection portion includes the second fold line portion.

4. The touch substrate according to claim 3, wherein: Each of the connecting sub-electrodes includes a plurality of first fold line portions and a plurality of second fold line portions, The plurality of first fold line portions are sequentially arranged and sequentially connected along the first direction to form the first connecting portion. The plurality of second fold line portions are sequentially arranged and sequentially connected along the first direction to form the second connection portion.

5. The touch substrate according to claim 4, wherein: The vertices of the plurality of first fold line portions are substantially located on a third straight line extending along the first direction, and the vertices of the plurality of second fold line portions are substantially located on a fourth straight line extending along the first direction. The touch substrate according to claim 3 , wherein: The first contact portion includes a plurality of first sub-contact portions, the plurality of first sub-contact portions are arranged at intervals from each other, the first connecting portion and the second connecting portion are respectively connected to different first sub-contact portions in the first contact portion, so that the plurality of first sub-contact portions are electrically connected to each other through the first connecting portion and the second connecting portion; The second contact portion includes a plurality of second sub-contact portions, which are arranged at intervals from each other. The first connecting portion and the second connecting portion are respectively connected to different second sub-contact portions in the second contact portion, so that the plurality of second sub-contact portions are electrically connected through the first connecting portion and the second connecting portion.

7. The touch substrate according to claim 6, wherein: The first connecting portion and the second connecting portion are substantially axisymmetric with respect to a second straight line extending along the first direction. Centers of the plurality of first sub-contact portions and centers of the plurality of second sub-contact portions are substantially located on the second straight line.

8. The touch substrate according to claim 3, wherein: The touch control substrate includes a first conductive layer, an insulating layer, and a second conductive layer located on the base substrate. The insulating layer is located between the first conductive layer and the second conductive layer, and the first conductive layer and the second conductive layer are spaced and insulated from each other in a direction perpendicular to the substrate by the insulating layer; The second touch sub-electrode is located on the first conductive layer, and the second connecting electrode is located on the second conductive layer. The first contact portion in the second connection electrode is connected to the second touch sub-electrode through at least one first via hole that at least penetrates the insulating layer, and the second contact portion in the second connection electrode is connected to the second touch sub-electrode through at least one second via hole that at least penetrates the insulating layer.

9. The touch substrate according to claim 8, wherein: The first contact portion and the second touch sub-electrode at least partially overlap in a direction perpendicular to the base substrate to form the at least one first via hole; The second contact portion at least partially overlaps with the second touch sub-electrode in a direction perpendicular to the base substrate to form the at least one second via hole.

10. The touch substrate according to claim 8, wherein: The first conductive layer is located on a side of the second conductive layer away from the base substrate.

11. The touch substrate according to claim 8, wherein: The first touch sub-electrode and the first connecting electrode are located in the first conductive layer.

12. The touch substrate according to claim 1 or 2, wherein: The first touch electrode and the second touch electrode each include a grid structure formed by a plurality of metal grids.

13. The touch substrate according to claim 12, wherein: The area enclosed by the orthographic projection of the connecting sub-electrode of the second connecting electrode on the base substrate at least partially overlaps with the area enclosed by the orthographic projection of the first touch electrode on the base substrate. The grid structure of the first touch electrode includes at least one metal grid located in the overlapping area.

14. The touch substrate according to claim 13, wherein: The at least one metal grid includes one or more closed metal grids.

15. The touch substrate according to claim 1 or 2, wherein: In a direction perpendicular to the base substrate, the first fold line portion of the connecting sub-electrode and the first touch electrode overlap each other at at least one first position; In a direction perpendicular to the base substrate, the second fold line portion of the connecting sub-electrode and the first touch electrode overlap with each other at at least one second position.

16. The touch substrate according to claim 15, wherein: The first fold line portion includes a first line segment portion and a second line segment portion, one end of the first line segment portion and one end of the second line segment portion are connected to each other to form the fold line shape that is approximately V-shaped. In a direction perpendicular to the base substrate, the first fold line portion of the connecting sub-electrode overlaps with the first touch electrode at a plurality of first positions, and the plurality of first positions are located in the first line segment portion and / or the second line segment portion; The second fold line portion includes a third line segment portion and a fourth line segment portion, one end of the third line segment portion and one end of the fourth line segment portion are connected to each other to form the fold line shape that is approximately V-shaped. In a direction perpendicular to the base substrate, the second fold line portion of the connecting sub-electrode overlaps with the first touch electrode at a plurality of second positions, and the plurality of second positions are located at the third line segment portion and / or the fourth line segment portion.

17. The touch substrate according to claim 1 or 2, wherein: The second connection electrode includes a plurality of connection sub-electrodes, and the plurality of connection sub-electrodes are arranged along the second direction. The plurality of connecting sub-electrodes are respectively connected to the second touch sub-electrode at different positions of the second touch sub-electrode.

18. The touch substrate according to claim 1 or 2, wherein: The first touch electrode and the second touch electrode are insulated from each other; The first touch electrodes are touch driving electrodes, the second touch electrodes are touch sensing electrodes, or The first touch electrodes are touch sensing electrodes, and the second touch electrodes are touch driving electrodes.

19. A display panel comprising a display device and the touch substrate according to claim 1, wherein: The display device and the touch substrate are stacked.

20. The display panel according to claim 19, further comprising an encapsulation layer, wherein The encapsulation layer is located between the display device and the touch substrate.

21. An electronic device comprising the display panel according to claim 19.

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